Range oven door and window construction



Jan. 15, 1952 A. L. ROSE.

RANGE OVEN DOOR AND wmnow CONSTRUCTION Filed Sept. 29, 1947 2SHEETS-SHEET l I/vvE/v TOE.

Jan. 15, 1952 ROSE 7 2,582,458

RANGE OVEN DOOR AND WINDOW CONSTRUCTION Filed Sept. 29, 1947 2SHEETS-SHEET 2 I N l/EN TOR.

H1 12 IL 59 y Patented Jan. 15, 1952 *umreo J'STATES :PAT NT DEF-ICERANGE OVEN"DOOI E'A' NDWINDOW CONSTRUCTION Arnold" L.= Rose, BeverlyHills, Calif.,= assign or to Supermatic Products Corporation, .Burb ank,

Calif a corporation of California "Application'september 29, I947,'serial Noi 776gfi58 2 Claims. (Cl.' 126f200) 1 This inventionrelates-toanoven orgrill door construction, particularly designed foruse in ranges.

It is a particulaffeature of my'invention' to provide a doorconstruction "adapted for the mounting of a 'window'to"provide a view ofthe interior *ofthe' oven orgrill.

Itis an object "ofrny invention to provide a glass window in 'a rangeoven or grill oven door of such construction that the window isprotected against unduestrains resulting from expansion of"themetallic'portions of the oven door.

Itis another objeot of-my invention to design an oven or grill+door-oonstruction which -is cooperative with "the window to provide anair insulationchamber.

It is a furtherobject ofimy invention toso mount the glasszwindows inoven or grill doors of ranges that the: windows may be easily replacedin casethey become broken.

of Fig." 5, of'my' invention shown mounted'for' use as arange oven door;

Fig.2 'isadetail in part section" showing the method of hinging thedoor;

Fig. 3 is a further viewof the hinge'detail showingthe' door in full'openposition;

Fig.4 isaperspective view of the hinge-bar;

-Fig.- 5 is a posterior viewof "the door showing --its-position on theoven, saidview being-taken onlineE-Fof Fig. 1; and 1 Fig: 6 is anexploded-view of the door.

The door is shown as-positioned on the front opening of an oven chamberof.-.a"range'2, and is formed to it into the opening and close theopeningby abutting the front face 3 of range 2.

The door is constructed of a plurality of units composed of a main frame4 on which is mounted a window frame ,5 in which is mounted spacer 6,window panes! and8, a posterior clamping plate'ii, and an anteriorclamping cover or 'frame front I 0 which forms'the front "face'o'f thedoor.

The main framed having a dished body section "is formed from a dishedstamping formedwith a irim l 1: and-:aviiange l2 .atirightrangles towtherim which extendsacross: the-i-topand :thetwo sides of-. the frames atright-angles to the'rim l i. .'-I-IoweVer ,-:at the base of- .theframethe rim and flange are connected by a .sloping surface 1-2 which-formsan .obtuse .dihedral angle with rim H and .fiange 12 for: purposes to bemoreiifully described below.

Theiiangeilis connected .bytwo' right angle bendsto the posteriorsurface l4 of the door 1 .to forma flangeseatl5 on .alliour "sides ofthe door. The posterior surface of the 'door'is cut ou'tintoarectangular or square'opening. ",The

shape j thus described may" be "formed I'from a single sheet of steel byastamping or drawing operation or. may be assembled from pre' formedparts as desired.

.Thewindow .frame- 5 is mounted on .the anterior surface of M. Thisframemayibe formed permit .it slide" "between i the flanges [8.

.by notohing an angle at three positions of one side" i I ofthe angle sospaced that when'the angle is bent. at right angles, the angle may .bebent into .a rectangularframe of desired dimensions, as shownin Fig.6."The frame is mounted onthe anterior surface of M-by spot welding;riveting, or otherimeans .in such manner that 'it'frames the opening'in''4 with the side l8 of'the angle extending at right angles to' M. "Thespacer'fi is'form'ed by notchingfthe "flange" 2'0 in channel. memberwiththree right angle" notches l'9'so spaced that whenthe base 2| of thechannel is bentiat right angles atthenotches, the spacer is foi'me'd."The external periphery'of' the spacer is suchiias to The width" ofthe'fianges I 8 is'suflicientto receive the separator'andtwo' panes of'glass. "The ends of the channelmay be joinedeither by a'strap' or bywelding.

The clamping 'plateB is 'formed from a stamping from a sheet'of metarinwhich the'op'ening 22 hasbeencu't. The opening is ofthesame "size asthe'opening ofthe' flangeslB, The crosssection of the plate 9 is curvedinadegreeand'manner to befu'rther described below. Suitable 'bores'for"passageof screws orbolt'sarealso provided at 23 at-spaced intervalsaround=- the plate.

The front cover I '0 carries ahan'dle '24 and' an 'openingZB, 'Th'ecoverI0. is complementaryto the frame "4' and carries airim "26 which willfitover the rim and extend over thetopand sides of cover l0. "The'bottom'of the cover carries a rim'formed of two sections 21 and'28' forming adihedral angle and parallel, respectively.

"tothe rim l'l and'surface l3uat thelbottom of the frame 4.

At the lower or base portion of the back l4 two slots 29 and 29a areprovided on each side of the frame 5 and extending longitudinally in thesides of the main frame 4.

The door is hung on hangers 30 formed of a bar section and a latch bar3| connected together by an arcuate section 32 formed of a 90 arc. Thelatch bar 3| carries a hook 33. Hanger bar 34 carries ears 35 and ismounted on the front face 3 of the oven below the lower rim of the ovenopening with the cars 35 passing through the opening 29a when the dooris hung on the range. The bar 3|] may be hinged to the ears 35 andpassed through the opening 29 when the hook 33 is passed through openingformed at each side of the oven opening near the base thereof. A box 31is built on the posterior surface of the range face 3 to box in thelatch bar 3| and the hook 33 is spring-connected to the base 38 of thebox by spring 39.

To assemble the door I may proceed in the following manner. The cover Iis fitted over the frame 4 by hooking 2'1 and 28 over H and I3. The rim26 may then be slid over the rim I, fitting snugly by a friction fit.

The glass pane 8 may then be fitted in. The curved lip -40 of the frontpanel which frames the opening 25, having sufficient arcuate curvature,forms an inward rim against which the window may fit spaced from theposterior face of II). The glass thus abuts and rides on the edge of themetal at 4| and is framed thereby. The glass abuts on all four sidesagainst the flange l8 which is of suflicient width to encompass the edgeof the glass 8. The spacer 6 is then placed between the flanges l8 andthe glass 1 then is fitted against the spacer 6 with its posteriorsurface substantially coplanar with the posterior surface I4.

The clamping plate may then be put in place by means of screws 42. Priorto setting the clamping plate in position an asbestos rope gasket isplaced along the edges of the glass 7 so as to cover the crack betweenthe glass and the contiguous edges of IS. The are of the clamping plate9 is so formed that while the edge 44 may bear against H, its edge 45 isspaced from the glass 1, overlaps its edge, and presses against thegasket 45. The clamping plate 9 thus frames and holds the glass andspacer in secure position with a gasket seal.

I thus provide an insulating air channel 46 which completely surroundsthe window and insulates the cover It) forming the face of the door fromthe heated back. The windows and spacers 6 are free floating in theframe and undue expansion and strain are not exerted on the glass. Itwill be observed that the front pane 8 is spaced from the rear windowpane by the spacer 6 by means of an air space. The front window panethus remains cool even when a high temperature is reached in the oven.

The provision of the gasket 45 between the clamping plate and the glasswindow pane 1 is of primary value in reducing the uneven strains whichare imposed on the rear window. By positioning the window in a freefloating position and holding the window in position by the gasket 45,which has considerable give or resiliency to distort and conform to thewindow as heat causes expansion of the metal parts without undue strainon the glass, I obtain a window mounting in which the danger of breakingthe glass pane is minimized.

This form of construction also permits of an easy assembly anddisassembly for replacement of the window should one break as a resultof an accident. The simple removal of the screws 42 permits of theremoval of the clamping plate 9 and the window.

One of the most useful features of my invention is the ease with whichthe window assembly may be disassembled for removal of the windows forcleaning purposes. Windows become fogged and dirty in use. The simpleremoval of the clamping plate permits of the removal of the windows fromtheir frame for cleaning. The assembly thereof, as explained above, isalso as simple.

While I have described a particular embodiment of my invention for thepurpose of illustration, it should be understood that variousmodifications and adaptations thereof may be made within the spirit ofthe invention as set forth in the appended claims.

I claim:

1. A combined range door and window construction, comprising a mainframe member having a dished body section having upstanding flangesections, said body section being formed with a window opening centrallypositioned in said dished body section, a window frame member having aright angular cross section, one leg of said window frame member beingmounted on the anterior surface of said dished body section contiguousto and framing said window opening, the other leg of said frame memberextending at right angles to said anterior surface around said opening,a window spacer having a channel cross section mounted between the sidesof said window frame which extends at right angles to said anteriorsurface, a pair of window panes mounted in said window frame adjacentthe posterior and anterior surfaces of said window spacer, a front panelof shape complementary to said main frame member and having upstandingrims adapted to frictionally engage the flange section of said mainframe member, said dished body section having an opening complementaryto and in registry with said opening of said main frame member, theedges of said opening of said front panel being bent in an arcuate curvein a posterior direction and adapted to seat against the window paneadjacent said front panel, a rear clamping member having an arcuatecross section, formed with an opening complementary to and in registrywith the opening of said main frame member, means for mounting saidclamping member on the posterior surface of said main frame member, theouter edge of said clamping member bearing on said posterior surface ofsaid main frame member and the imier edge being spaced from saidadjacent window pane, and a gasket framing said lastnamed window paneand positioned between said last-named window pane and the edge of theclamping member.

2. A combined range door and window construction, comprising a mainframe member, having a dished body section having upstanding flangesections, said body section being formed with a window opening centrallypositioned in said dished body section, a window frame member having aright angular cross section, said window frame member being mounted onthe anterior surface of said dished body section contiguous to andframing said window opening, the said window frame member having sidesof said frame member extending at right angles to said anterior surfacearound said opening, a window spacer having a channel cross sectionmounted within the opening of said window frame, a window pane mountedin said window frame and adjacent the posterior surface of said spacer,a window pane mounted in said window frame and adjacent the anteriorsurface of said spacer, a front panel of shape complementary to saidmain frame member and having upstanding rims adapted to frictionallyengage the flange sections of said main frame member, said frame fronthaving an opening complementary to and in registry with said opening ofsaid main frame member, the edges of said opening of said frame frontbeing bent in an arcuate curve in a posterior direction and adapted toseat against the window pane adjacent said frame front, said main framemember and said frame front forming an air channel surrounding saidwindow panes and spacer, a rear clamping member having an arcuate crosssection and formed with an opening complementary to and in registry withthe opening of said main frame member, means for mounting said clampingmember on the posterior surface of said main frame member, the outeredge of said clamping member bearing on said posterior surface of saidmain frame member and the inner edge being spaced from said adjacentwindow pane, and a gasket framing said last-named window pane andpositioned between said lastnamed window pane and the edge of theclamping member.

ARNOLD L. ROSE.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 2,008,345 Blanchford July 16,1935 2,319,004 Lotter May 11, 1943 2,325,773 Hennessy Aug. 3, 19432,336,999 Pelle Dec. 14, 1943 2,377,684 Firner June 5, 1945 2,394,176Hillebrand Feb. 5, 1946 2,402,105 Verhagen June 11, 1946 2,466,847Hardwick Apr. 12, 1949 FOREIGN PATENTS Number Country Date 451,702 GreatBritain Aug. 11, 1936 461,018 Great Britain Feb. 9, 1937

